Resize to Fit option for Import Activity window's Columns does nothing

Steps to reproduce:

1. Open the attached project
2. Open the Import Activity window
3. Reduce the width of the Asset, Last Import and Duration columns
4. Right-Click
5. Select the Resize to Fit option
6. Observe the Import Activity window

Actual results: Nothing happens

Expected results: Columns are resized to utilise the entire available width

Reproducible with versions: 6000.0.71f1, 6000.3.11f1, 6000.4.0f1, 6000.5.0a9. 6000.6.0a1

Tested on (OS): Windows 11, macOS 26.3.1

Notes:

• Also reproduces in the Previous Imports tab